well honestly nalbandian, roddick, nadal, haas, and santoro are the only ones with any kind of chance over roger.
Nadal yes, and Nalbandian maybe, but the head to heads on the others...
Roddick - Fed leads 10-1
(I laugh every time I think about this
Haas - Fed leads 5-2
Santoro - Fed leads 8-2
I find his record against Nalbandian interesting, IMO opinion it should have been 5-5... if only Fed had been fully fit for the Masters Cup.
I think this record will change in Federer's favour in the future.
Nadal I am not sure about... need more time to see...